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Cannot detect D455

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Yixun Liu

Hi,

I connect D455 with the cable shipped with this camera to Windows but it cannot been detected under "camera" in Device Manager. It can be detected as a USB device, but not under "camera". Every things goes well with D415 for the same computer and cable.

Thanks a lot!

Yixun

 

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11 comments

Date Votes
  • MartyG
    • Edited

    Hi Yixun Liu  If the D455 is not listed under Cameras in the Windows Device Manager, is there an Imaging Devices category that it is listed under?

     

    If it is not under Cameras or Imaging Devices, please find the place in the Device Manager where it is listed and right-click on the entry for the camera, then select Uninstall device from the drop down menu.

     

    After removing the camera's entry from the Device Manager, unplug the camera from the USB port, wait a couple of seconds and re-insert it into the port.  The RealSense drivers should automatically re-install.  Can they now be found under Cameras ?

     

    You will not harm your D415 by doing this removal and reinstall as each camera has its own set of drivers in the Device Manager that only appear when that camera is plugged in.

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  • Yixun Liu 
    We tried this and got the following error.  Under "Camera" a wrong type "4n0" is detected but with a warning.
    Thank you.

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  • MartyG

    Has a firmware driver update been performed on the D455 camera recently?

     

    Is the camera detectable with the rs-enumerate-devices tool?  Please try checking which firmware version is installed by using the command below.

    rs-enumerate-devices -s

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  • Yixun Liu

    As I run the command: rs-enumerate-devices -s I got the error "No device detected. Is it plugged in".

    Actually I have two D455 and I tested both using the same cable on the same computer. One is OK but the other is not.

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  • Yixun Liu

    BTW, for the D455 which can be detected correctly and also can stream in RealSense Viewer, as I run the command as you said I got the following. What the meaning "malformed vid string..."?

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  • Yixun Liu

    The following pic shows the error with the D455 camera not detected.

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  • MartyG

    There is not a definition available for what the malformed vid string error means.  It seems to be an error that only occurs on Windows though, as it is part of the win-helpers.cpp file of the RealSense SDK.

    https://github.com/IntelRealSense/librealsense/blob/e1688cc318457f7dd57abcdbedd3398062db3009/src/win/win-helpers.cpp#L106

     

    How did you install the RealSense SDK, please?  Did you build it from source code or use the automated Intel.RealSense.SDK-WIN10 installer program i the "Assets" file list on the SDK 'Releases' page?

    https://github.com/IntelRealSense/librealsense/releases/tag/v2.55.1

     

     

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  • Yixun Liu

    I installed the SDK with the installer program, but it is an old version installed several years ago.

    Do I need to install the latest? If yes, uninstall the old one first and then install the latest?

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  • MartyG
    • Edited

    It is important to use an SDK version that is compatible with the firmware driver that is installed in the camera.  The minimum recommended firmware version for D455 is 5.13.0.50.  The SDK version that should be used with 5.13.0.50 is 2.50.0 or 2.51.1.

     

    On the SDK Releases page, the recommended firmware to use with a specific SDK version is listed under the 'Recommended Firmware' section of each SDK version's release information.

    https://github.com/IntelRealSense/librealsense/releases

     

    You do not need to remove the previous SDK installation as the installer program automatically overwrites the last version with the new one.

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  • Yixun Liu

    I am sorry. I gave you wrong answer regarding the question about how to install the SDK. Actually I built it from the source code.

    I know the command to check the FW version, but how to know the SDK version?

    Thank you!

     

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  • MartyG
    • Edited

    If you are able to launch the realsense-viewer tool then the version number will be shown on the top of its window.

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